package com.touka.config;

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.touka.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.List;

@Slf4j
@Configuration
@EnableSwagger2
@EnableKnife4j
public class WebMvcConfig extends WebMvcConfigurationSupport {
  /**
   * 设置静态资源映射
   *
   * @param registry
   */
  @Override
  protected void addResourceHandlers(ResourceHandlerRegistry registry) {
    log.info("开始进行静态资源映射...");
    registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
    registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
    registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
    registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    registry.addResourceHandler("/common/download/**").addResourceLocations("classpath:/common/download/");
  }

  /**
   * 拓展mvc框架的消息转换器
   *
   * @param converters
   */
  @Override
  protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
    log.info("拓展消息转换器...");
    // 创建消息转换器对象
    MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
    // 设置对象转换器，底层使用Jackson将Java对象转为json
    messageConverter.setObjectMapper(new JacksonObjectMapper());
    // 将上面的消息转换器对象追加到mvc框架的转换器集合中
    converters.add(0, messageConverter);
  }

  @Bean
  public Docket createRestApi() {
    // 文档类型
    return new Docket(DocumentationType.SWAGGER_2)
            .apiInfo(apiInfo())
            .select()
            .apis(RequestHandlerSelectors.basePackage("com.touka.controller"))
            .paths(PathSelectors.any())
            .build();
  }

  private ApiInfo apiInfo() {
    return new ApiInfoBuilder().title("瑞吉外卖").version("1.0").description("瑞吉外卖接口文档").build();
  }
}
